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Volumn 127, Issue 18, 2005, Pages 6617-6631

Dynamic behavior of chiral sulfonimidoyl-substituted allyl and alkyl (dimethylamino)titanium(IV) complexes: Metallotropic shift, reversible β-hydride elimination/reinsertion, and ab initio calculations of allyl and alkyl aminosulfoxonium ylides

Author keywords

[No Author keywords available]

Indexed keywords

ALDEHYDES; CHEMICAL BONDS; COMPLEXATION; CONFORMATIONS; ELECTROSTATICS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; OLEFINS; SUBSTITUTION REACTIONS; TITANIUM COMPOUNDS;

EID: 18644385760     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0433828     Document Type: Article
Times cited : (23)

References (106)
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    • (2003)
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    • For the synthesis of chiral sulfonimidoyl-substituted allyl tris(isopropoxy)-titanium(IV) complexes, which carry a further chiral substituent at the N atom, and their highly successful application in asymmetric synthesis, see: (a) Reggelin, M.; Weinberger, H. Angew. Chem. 1994, 106, 489-491;
    • (1994) Angew. Chem. , vol.106 , pp. 489-491
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    • note
    • (a) Cyclic complexes of type I and IV, whose double bond is embedded in a carbocyclic ring, show the same diversity in reactivity.
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    • Ph.D. Thesis, RWTH Aachen
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    • (1995)
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    • 1J(C,H) for Cl of a carbanion on changing its coordination geometry from a tetrahedral to a planar, see: Reich, H. J.; Dykstra, R. R. J. Am. Chem. Soc. 1993, 115, 7041-7042.
    • (1993) J. Am. Chem. Soc. , vol.115 , pp. 7041-7042
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    • For NMR data of sulfur ylides, see: (a) Schmidbaur, H.; Kammel, G. Chem. Ber. 1971, 104, 3234-3240.
    • (1971) Chem. Ber. , vol.104 , pp. 3234-3240
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    • note
    • SPh* interaction (cf. Figures 8 and 9) in the chair-like TS.
  • 78
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    • Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin: Madison, WI 53706
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    • For the observation of a reversible alkene extrusion upon reaction of an alkyltitanium(III) complex with alkenes, which proceeds via an intermediate titamum(III) hydride, see: Luinstra, G. A.; Voegelzang, J.; Teuben, J. H. Organometallics 1992, 11, 2273-2281.
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    • note
    • The 1,3-C,N-shift of the Li atom of 15 could also take place within a cyclic eight-membered dimer of 15, the Li atoms of which are each coordinated by a Ć atom and a N atom; see ref 32a. Alternatively, the topomerization of the hydrogens of the methylene groups could proceed within an ion pair formed through dissoziation of 15.


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